Getting onto HP2207

[Beartooth]

	I have an old Dell PowerEdge SC1420, which ceased to be a server 
or to have any form of RAID when I inherited it. Over the years, I've run 
many releases of Fedora on it, one or two of CentOS, and I disremember 
what all else on it. 

	Some OSs figure out my HP w2207h monitor on contact, even from 
behind the KVM switch where I normally keep it; the last few Fedora 
releases have been good about that, iirc.

	Some OSs don't while behind the switch, but do if I shut 
everything down and connect the Dell directly and alone to the 
peripherals.

	Some OSs never get it; I have had to tinker endlessly with 
xorg.conf a/o grub.conf.

	But now F21 doesn't get it, and I can't seem to find a file that 
will let me tell it there is such a thing as a 27" 1680x1050 terminal. 
(The only plausible candidates so far open with DO NOT EDIT THIS FILE, 
and a reference to the other files that set them; but I'm drawing a blank 
about any way to reset the setting files.)

	Clue, please?

-- 
Beartooth Staffwright, Not Quite Clueless Power User
Remember I know little (precious little!) of where up is.